You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

29 lines
891 B

## Register
To conveniently check for a given string or document, you will create a register smart contract.
### Instructions
Write a solidity smart contract `Register` that provides the following :
- a function `addDocument()` that takes as parameter a hash (bytes32 in solidity)
- a function `getDate()` that takes as parameter a hash and returns the corresponding unix timestamp of the document
```js
contract Register {
function getDate(bytes32 documentHash) public view returns (uint) {
}
function addDocument(bytes32 documentHash) public {
}
}
```
### Hint
You may use block.timestamp to retrieve the current block date and a mapping (see Notions).
### Notions
- [Block information](https://docs.soliditylang.org/en/v0.4.21/units-and-global-variables.html#block-and-transaction-properties)
- [mapping](https://docs.soliditylang.org/en/v0.8.4/types.html#mapping-types)